Quick Start Procedure - Linear Technology DC1659A Quick Start Manual

QUICK START PROCEDURE

The DC1659A provides a simple way to evaluate the
performance of the LT6109. Refer to Figure 1 for proper
measurement equipment setup and follow the procedure
below:
1. With the power off, connect the power supply positive
to IN and the common to GND. With default board
settings the supply can range from 3.3V to 60V. If the
supply does not have an accurate current readout, a
DMM may be connected in series with the supply as
shown in Figure 1.
2. Connect a DMM or oscilloscope to the I
common connection connected to ground.
3. Connect a load to the demo boards OUT terminal (posi-
tive) and ground. The load may be a power resistor,
active load instrument or a circuit of interest.
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with the
OUT
20.0V
Reset
0.10A
1.0V
DEMO MANUAL DC1659A
4. Turn on the power supply. The comparators start in an
unknown state and must be reset. This can be done
by pressing the reset button. With the load shown in
Figure 1 the comparator outputs should be:
PART
DC1659A-A LT6109-1
DC1659A-B LT6109-2
5. Measure the output voltage and confirm it corresponds
to the load current. V
installed resistors.
6. If able, sweep load current from 0mA to 300mA to verify
the operation of the comparators. The LED will turn on
when the comparator output has latched low. Use the
reset circuitry to reset comparator output.
Figure 1. Test Setup
C C
OUT1 OUT2
High High
High Low
= 10 • I for the factory
IOUT LOAD
Load
200Ω
dc1659af
3